Pixel arrangement of color display panel

ABSTRACT

A pixel arrangement of color display panel includes a plurality of white sub-pixels extending along a first direction and forming a plurality of white sub-pixel columns and a plurality of first sub-pixels, second sub-pixels and third sub-pixels disposed between the white sub-pixel columns to respectively provide a first color light, a second color light and a third color light. The first, second, third and white sub-pixels respectively have a first length, a second length, a third length and a fourth length in the first direction. The first sub-pixels, the second sub-pixels and the third sub-pixels are arranged in a specific sequence. The first length is equal to the second length, the second length is equal to the third length, and the fourth length is greater than the first length.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a division of U.S. application Ser. No. 14/308,719filed on Jun. 19, 2014, which is incorporated herein by reference in itsentirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a pixel arrangement of color displaypanel, and more particularly, to a pixel arrangement of color displaypanel with high resolution.

2. Description of the Prior Art

Organic light-emitting diode (OLED) display panel is expected to be amainstream of flat display panels in the next generation for itsadvantages of self-luminous, high contrast ratio, slimness and wideviewing angle. The pixel arrangement of convention OLED display panel iscomposed of sub-pixels of three different primary colors such as redsub-pixels, green sub-pixels and blue sub-pixels, and the full colordisplay effect can be achieved by adjusting grayscales of red light,green light and blue light. The conventional pixel arrangement of OLEDdisplay panel, however, suffers from low brightness for the image iscomposed of red light, green light and blue light. In anotherconventional pixel arrangement of OLED display panel, white sub-pixelsare used in addition to red sub-pixels, green sub-pixels and bluesub-pixels, i.e. each pixel unit is composed of four sub-pixelsincluding a red sub-pixel, a green sub-pixel, a blue sub-pixel and awhite sub-pixel. The resolution is reduced, which deteriorates displayquality.

SUMMARY OF THE INVENTION

It is therefore one of the objectives of the present invention toprovide a pixel arrangement of color display panel with high brightnessand high resolution.

According to an embodiment of the present invention, a pixel arrangementof color display panel is provided. The pixel arrangement of colordisplay panel includes a plurality of first sub-pixels, secondsub-pixels, third sub-pixels and white sub-pixels. The first sub-pixelsare configured to provide a first color light, wherein the firstsub-pixels extend along a first direction and form a plurality of firstsub-pixel columns substantially arranged in parallel, and the firstsub-pixel has a first length in the first direction. The secondsub-pixels are disposed between two adjacent first sub-pixel columns andconfigured to provide a second color light, wherein the second sub-pixelhas a second length in the first direction. The third sub-pixels aredisposed between two adjacent first sub-pixel columns and configured toprovide a third color light, wherein the third sub-pixel has a thirdlength in the first direction. The white sub-pixels are disposed betweentwo adjacent first sub-pixel columns and configured to provide a whitelight, wherein the white sub-pixels extend along the first direction andform a plurality of white sub-pixel columns arranged substantially inparallel, the white sub-pixel column is disposed between two adjacentfirst sub-pixel columns, and the white sub-pixel has a fourth length inthe first direction.

According to another embodiment of the present invention, a pixelarrangement of color display panel is provided. The pixel arrangement ofcolor display panel includes a plurality of white sub-pixels, firstsub-pixels, second sub-pixels and third sub-pixels. The white sub-pixelsare configured to provide a white light, wherein the white sub-pixelsextend along a first direction and form a plurality of white sub-pixelcolumns, and the white sub-pixel has a fourth length in the firstdirection. The first sub-pixels are disposed between the white sub-pixelcolumns and configured to provide a first color light, wherein the firstsub-pixel has a first length in the first direction. The secondsub-pixels are disposed between the white sub-pixel columns andconfigured to provide a second color light, wherein the second sub-pixelhas a second length in the first direction. The third sub-pixels aredisposed between the white sub-pixel columns and configured to provide athird color light, wherein the third sub-pixel has a third length in thefirst direction, a portion of the first sub-pixels, the secondsub-pixels and the third sub-pixels are arranged along the firstdirection and forma plurality of first sub-pixel columns arrangedsubstantially in parallel, the first sub-pixels, the second sub-pixelsand the third sub-pixels of the first sub-pixel column are repeatedlyarranged in a sequence of the second sub-pixel, the first sub-pixel, thethird sub-pixel and the first sub-pixel, the other portion of the firstsub-pixels, the second sub-pixels and the third sub-pixels are arrangedalong the first direction and form a plurality of second sub-pixelcolumns arranged substantially in parallel, and the first sub-pixels,the second sub-pixels and the third sub-pixels of the second sub-pixelcolumn are repeatedly arranged in a sequence of the third sub-pixel, thefirst sub-pixel, the second sub-pixel and the first sub-pixel. The firstlength is substantially equal to the second length, the second length issubstantially equal to the third length, the fourth length is greaterthan the first length, and the first sub-pixel of the first sub-pixelcolumn entirely overlap the first sub-pixel of the second sub-pixelcolumn in a second direction perpendicular to the first direction.

According to still another embodiment of the present invention, a pixelarrangement of color display panel is provided. The pixel arrangement ofcolor display panel includes a plurality of first sub-pixels, secondsub-pixels, third sub-pixels and fourth sub-pixels. The first sub-pixelsare configured to provide a first color light, wherein the firstsub-pixel has a first length in a first direction. The second sub-pixelsare configured to provide a second color light, wherein the secondsub-pixel has a second length in the first direction. The thirdsub-pixels are configured to provide a third color light, wherein thethird sub-pixel has a third length in the first direction. The fourthsub-pixels are configured to provide a fourth light, wherein the fourthsub-pixel has a fourth length in the first direction, the first lengthis substantially equal to the fourth length, the second length issubstantially equal to the third length, and the second length isgreater than the first length. A portion of the first sub-pixels and aportion of the fourth sub-pixels are arranged along the first directionand form a plurality of first sub-pixel columns, and the firstsub-pixels and the fourth sub-pixels of the first sub-pixel column arerepeatedly arranged in a sequence of the first sub-pixel, the fourthsub-pixel and the first sub-pixel in the first direction. The otherportion of the first sub-pixels and the other portion of the fourthsub-pixels are arranged along the first direction and form a pluralityof fourth sub-pixel columns, and the first sub-pixels and the fourthsub-pixels of the fourth sub-pixel column are repeatedly arranged in asequence of the first sub-pixel, the fourth sub-pixel and the firstsub-pixel in the first direction, and any one of the first sub-pixels ofthe first sub-pixel column partially overlaps one of the firstsub-pixels and one of the fourth sub-pixels of the fourth sub-pixelcolumn in a second direction perpendicular to the first direction. Aportion of the second sub-pixels and a portion of the third sub-pixelsare arranged along the first direction and form a plurality of secondsub-pixel columns, and the second sub-pixels and the third sub-pixels ofthe second sub-pixel column are repeatedly arranged in a sequence of thesecond sub-pixel and the third sub-pixel in the first direction. Theother portion of the second sub-pixels and the other portion of thethird sub-pixels are arranged along the first direction and formaplurality of third sub-pixel columns, and the second sub-pixels and thethird sub-pixels of the third sub-pixel column are repeatedly arrangedin a sequence of the third sub-pixel and the second sub-pixel in thefirst direction. The first sub-pixel columns, the second sub-pixelcolumns, the third sub-pixel columns and the fourth sub-pixel columnsare repeatedly arranged in a sequence of the second sub-pixel column,the first sub-pixel column, the third sub-pixel column and the fourthsub-pixel column in the second direction.

The pixel arrangement of color display panel of the present inventionincludes green sub-pixels, red sub-pixels, blue sub-pixels and whitesub-pixels, and adjacent pixel units shares at least one sub-pixel.Consequently, the brightness can be increased through white sub-pixelswithout sacrificing resolution. In addition, the pixel arrangement ofcolor display panel of the present invention is able to support pixelrendering and/or white sharing mechanisms.

These and other objectives of the present invention will no doubt becomeobvious to those of ordinary skill in the art after reading thefollowing detailed description of the preferred embodiment that isillustrated in the various figures and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a third embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a fourth embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a fifth embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to an alternative embodiment of the fifthembodiment of the present invention.

FIG. 7 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a sixth embodiment of the present invention.

FIG. 8 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to an alternative embodiment of the sixthembodiment of the present invention.

FIG. 9 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to a seventh embodiment of the presentinvention.

FIG. 10 is a schematic diagram illustrating a pixel arrangement of colordisplay panel according to an alternative embodiment of the seventhembodiment of the present invention.

FIG. 11 is a schematic diagram illustrating nine adjacent pixel units ofthe pixel arrangement of color display panel of the present invention.

DETAILED DESCRIPTION

Refer to FIG. 1. FIG. 1 is a schematic diagram illustrating a pixelarrangement of color display panel according to a first embodiment ofthe present invention. As shown in FIG. 1, the pixel arrangement 1 ofcolor display panel of this embodiment includes a plurality of firstsub-pixels SP1, second sub-pixels SP2, third sub-pixels SP3 and whitesub-pixels SPW. The first sub-pixels SP1 are configured to provide afirst color light, the second sub-pixels SP2 are configured to provide asecond color light, the third sub-pixels SP3 are configured to provide athird color light and the white sub-pixels SPW are configured to providea white color light. In the present invention, the first color light ispreferably a green light, the second color light is preferably a redlight and the third color light is a preferably blue light, i.e. thefirst sub-pixels SP1 are green sub-pixels, the second sub-pixels SP2 arered sub-pixels and the third sub-pixels SP3 are blue sub-pixels, but notlimited thereto. In one configuration, the first sub-pixels SP1, thesecond sub-pixels SP2, the third sub-pixels SP3 and the white sub-pixelsSPW may include one or more white light-emitting devices e.g. OLEDdevices, respectively, and the first sub-pixels SP1, the secondsub-pixels SP2 and the third sub-pixels SP3 may include color filters(not shown) of different colors respectively (e.g. red color filters,green color filters and blue color filters), while the white sub-pixelsSPW do not include color filters. Alternatively, the white sub-pixelsSPW may include blueish color filters or yellowish color filters throughwhich the emitting light of the white sub-pixels SPW is still whitish(e.g. blueish white or yellowish white). In another configuration, thefirst sub-pixels SP1, the second sub-pixels SP2, the third sub-pixelsSP3 and the white sub-pixels SPW may include one or more greenlight-emitting devices (e.g. green OLED devices), red light-emittingdevices (red OLED devices), blue light-emitting devices (blue OLEDdevices) and white light-emitting devices (white OLED devices)respectively without any color filters.

In this embodiment, the first sub-pixels SP1 extend along a firstdirection D1 and form a plurality of first sub-pixel columns PC1substantially arranged in parallel, and the first sub-pixel SP1 has afirst length L1 in the first direction D1. The second sub-pixels SP2 aredisposed between two adjacent first sub-pixel columns PC1, and thesecond sub-pixel SP2 has a second length L2 in the first direction D1.The third sub-pixels SP3 are disposed between two adjacent firstsub-pixel columns PC1, and the third sub-pixel SP3 has a third length L3in the first direction D1. The white sub-pixels SPW are disposed betweentwo adjacent first sub-pixel columns PC1, and the white sub-pixels SPWextend along the first direction D1 and form a plurality of whitesub-pixel columns WC arranged substantially in parallel. The whitesub-pixel column WC is disposed between two adjacent first sub-pixelcolumns PC1, the white sub-pixel SPW has a fourth length L4 in the firstdirection D1, and the fourth length L4 is greater than the first lengthL1. In addition, a portion of the second sub-pixels SP2 and a portion ofthe third sub-pixels SP3 are alternately and repeatedly arranged in asequence of the second sub-pixel SP2 and the third sub-pixel SP3 in thefirst direction D1 and form a plurality of second sub-pixel columns PC2arranged substantially in parallel; the other portion of the secondsub-pixels SP2 and the other portion of the third sub-pixels SP3 arealternately and repeatedly arranged in a sequence of the third sub-pixelSP3 and the second sub-pixel SP2 in the first direction D1 and form aplurality of third sub-pixel columns PC3 arranged substantially inparallel. The first sub-pixel columns PC1, the second sub-pixel columnsPC2, the third sub-pixel columns PC3 and the white sub-pixel columns WCare alternately and repeatedly arranged in a sequence of the secondsub-pixel column PC2, the first sub-pixel column PC1, the whitesub-pixel column WC, the third sub-pixel column PC3, the first sub-pixelcolumn PC1 and the white sub-pixel column WC along a second direction D2perpendicular to the first direction D1. In the present invention, thefirst direction D1 is a column direction (i.e. Y direction), and thesecond direction D2 is a row direction (i.e. X direction), but notlimited thereto. For example, the first direction D1 may be a rowdirection, and the second direction D2 may be a column direction.Specifically, in the second direction D2, the 6n−5^(th) sub-pixelcolumns are the second sub-pixel columns PC2, the 6n−4^(th) sub-pixelcolumns and the 6n−1^(th) sub-pixel columns are the first sub-pixelcolumns PC1, the 6n−3^(th) sub-pixel columns and the 6n^(th) sub-pixelcolumns are the white sub-pixel columns WC, and the 6n−2^(th) sub-pixelcolumns are the third sub-pixel columns PC3, where n is integers greaterthan 1. In the first direction D1, all sub-pixels of the first sub-pixelcolumns PC1 are the first sub-pixels SP1, and all sub-pixels of thewhite sub-pixel columns WC are the white sub-pixels SPW; the 2m−1^(th)sub-pixels of the second sub-pixel columns PC2 are the second sub-pixelsSP2, and the 2m^(th) sub-pixels of the second sub-pixel columns PC2 arethe third sub-pixels SP3; the 2m−1^(th) sub-pixels of the thirdsub-pixel columns PC3 are the third sub-pixels SP3, and the 2m^(th)sub-pixels of the third sub-pixel columns PC3 are the second sub-pixelsSP2, where m is integers greater than 1. In this embodiment, the secondlength L2 is substantially equal to the third length L3, the firstlength L1 is substantially equal to the second length L2, the fourthlength L4 is greater than the first length L1, and the fourth length L4is substantially equal to a sum of two first lengths L1. In addition,each of the first sub-pixels SP1 entirely overlaps one of the secondsub-pixels SP2 in the second direction D2, each of the first sub-pixelsSP1 entirely overlaps one of the third sub-pixels SP3 in the seconddirection D2, each of the white sub-pixels SPW entirely overlaps two ofthe first sub-pixels SP1 in the second direction D2, and each of thewhite sub-pixels SPW entirely overlaps one of the second sub-pixels SP2and one of the third sub-pixels SP3 in the second direction D2. Also, inthe second direction D2, the first sub-pixel SP1, the second sub-pixelSP2, the third sub-pixel SP3 and the white sub-pixel SPW may have thesame width or different widths. The shape of the first sub-pixel SP1,the second sub-pixel SP2, the third sub-pixel SP3 and the whitesub-pixel SPW may be rectangular, rhombus, triangle or other appropriategeometrical shape.

The pixel arrangement of color display panel is not limited by theaforementioned embodiment, and may have other different preferredembodiments. To simplify the description, the identical components ineach of the following embodiments are marked with identical symbols. Formaking it easier to compare the difference between the embodiments, thefollowing description will detail the dissimilarities among differentembodiments and the identical features will not be redundantlydescribed.

Refer to FIG. 2. FIG. 2 is a schematic diagram illustrating a pixelarrangement of color display panel according to a second embodiment ofthe present invention. As shown in FIG. 2, the relative position of thefirst sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3and the white sub-pixel SPW in the pixel arrangement 2 of color displaypanel in this embodiment is similar to that of the first embodiment, butthe second length L2 of the second sub-pixel SP2, the third length L3 ofthe third sub-pixel SP3 and the fourth length L4 of the white sub-pixelSPW are different from that of the first embodiment. Specifically, inthis embodiment, the second length L2 is substantially equal to thethird length L3, the first length L1 is greater than the second lengthL2, and the fourth length L4 is substantially equal to the first lengthL1. In addition, the first length L1 is less than a sum of the secondlength L2 and the third length L3, a sum of two first lengths L1 issubstantially equal to a sum of three second lengths L2 (orsubstantially equal to a sum of three third lengths L3). Moreover, twoadjacent first sub-pixels SP1 entire overlap two of the secondsub-pixels SP2 and one of the third sub-pixels SP3 in the seconddirection D2, and each of the white sub-pixels SPW entirely overlaps oneof the first sub-pixels SP1 in the second direction D2.

Refer to FIG. 3. FIG. 3 is a schematic diagram illustrating a pixelarrangement of color display panel according to a third embodiment ofthe present invention. As shown in FIG. 3, the relative position of thefirst sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3and the white sub-pixel SPW in the pixel arrangement 3 of color displaypanel in this embodiment is similar to that of the first embodiment, butthe fourth length L4 of the white sub-pixel SPW is different from thatof the first embodiment. Specifically, the second length L2 issubstantially equal to the third length L3, the first length L1 issubstantially equal to the second length L2, the fourth length L4 isgreater than the first length L1, and the fourth length L4 is less thana sum of two first lengths L1. In addition, two adjacent whitesub-pixels SPW entirely overlap three of the first sub-pixels SP1 in thesecond direction D2, and two adjacent white sub-pixels SPW entirelyoverlap two of the second sub-pixels SP2 and one of the third sub-pixelsSP3 in the second direction D2.

Refer to FIG. 4. FIG. 4 is a schematic diagram illustrating a pixelarrangement of color display panel according to a fourth embodiment ofthe present invention. As shown in FIG. 4, in the pixel arrangement 4 ofcolor display panel of this embodiment, the first sub-pixels SP1 extendalong the first direction D1 and form a plurality of first sub-pixelcolumns PC1 substantially arranged in parallel, the second sub-pixelsSP2 extend along the first direction D1 and form a plurality of secondsub-pixel columns PC2 arranged substantially in parallel, the thirdsub-pixels SP3 extend along the first direction D1 and form a pluralityof third sub-pixel columns PC3 arranged substantially in parallel, andthe white sub-pixels SPW extend along the first direction D1 and form aplurality of white sub-pixel columns WC arranged substantially inparallel. The first sub-pixel columns PC1, the second sub-pixel columnsPC2, the third sub-pixel columns PC3 and the white sub-pixel columns WCare alternately and repeatedly arranged in a sequence of the secondsub-pixel column PC2, the first sub-pixel column PC1, the whitesub-pixel column WC, the third sub-pixel column PC3, the first sub-pixelcolumn PC1 and the white sub-pixel column WC along a second direction D2perpendicular to the first direction D1. Specifically, in the seconddirection D2, the 6n−5^(th) sub-pixel columns are the second sub-pixelcolumns PC2, the 6n−4^(th) sub-pixel columns and the 6n− 1^(th)sub-pixel columns are the first sub-pixel columns PC1, the 6n−3^(th)sub-pixel columns and the 6n^(th) sub-pixel columns are the whitesub-pixel columns WC, and the 6n−2^(th) sub-pixel columns are the thirdsub-pixel columns PC3, where n is integers greater than 1. In the firstdirection D1, all sub-pixels of the first sub-pixel columns PC1 are thefirst sub-pixels SP1, all sub-pixels of the white sub-pixel columns WCare the white sub-pixels SPW, all sub-pixels of the second sub-pixelcolumns PC2 are the second sub-pixels SP2, and all sub-pixels of thethird sub-pixel columns PC3 are the third sub-pixels SP3. In addition,the second length L2 is substantially equal to the third length L3, thefourth length L4 is substantially equal to the third length L3, thefourth length L4 is greater than the first length L1, and a sum of twofirst lengths L1 is substantially equal to the fourth length L4. Also,two adjacent first sub-pixels SP1 entirely overlap one of the secondsub-pixels SP2 in the second direction D2, two adjacent first sub-pixelsSP1 entirely overlap one of the third sub-pixels SP3 in the seconddirection D2, and two adjacent first sub-pixels SP1 entirely overlap oneof the white sub-pixels SPW in the second direction D2.

Refer to FIG. 5. FIG. 5 is a schematic diagram illustrating a pixelarrangement of color display panel according to a fifth embodiment ofthe present invention. As shown in FIG. 5, the pixel arrangement 5 ofcolor display panel of this embodiment includes a plurality of whitesub-pixels SPW, first sub-pixels SP1, second sub-pixels SP2 and thirdsub-pixels SP3. The white sub-pixels SPW are configured to provide awhite light, the first sub-pixels SP1 are configured to provide a firstcolor light (e.g. a green light), the second sub-pixels SP2 areconfigured to provide a second color light (e.g. a red light) and thesub-pixels SP3 are configured to provide a third color light (e.g. ablue light). The white sub-pixels SPW extend along the first directionD1 and form a plurality of white sub-pixel columns WC, and the whitesub-pixel SPW has a fourth length L4 in the first direction. The firstsub-pixels SP1 are disposed between the white sub-pixel columns WC, andthe first sub-pixel SP1 has a first length L1 in the first direction D1.The second sub-pixels SP2 are disposed between the white sub-pixelcolumns WC, and the second sub-pixel SP2 has a second length L2 in thefirst direction D1. The third sub-pixels are disposed between the whitesub-pixel columns WC, and the third sub-pixel SP3 has a third length L3in the first direction D1. In addition, a portion of the firstsub-pixels SP1, the second sub-pixels SP2 and the third sub-pixels SP3are arranged along the first direction D1 and form a plurality of firstsub-pixel columns PC1 arranged substantially in parallel, where thefirst sub-pixels SP1, the second sub-pixels SP2 and the third sub-pixelsSP3 of the first sub-pixel column PC1 are repeatedly arranged in asequence of the second sub-pixel SP2, the first sub-pixel SP1, the thirdsub-pixel SP3 and the first sub-pixel SP1; the other portion of thefirst sub-pixels SP1, the second sub-pixels SP2 and the third sub-pixelsSP3 are arranged along the first direction D1 and form a plurality ofsecond sub-pixel columns PC2 arranged substantially in parallel, wherethe first sub-pixels SP1, the second sub-pixels SP2 and the thirdsub-pixels SP3 of the second sub-pixel column PC2 are repeatedlyarranged in a sequence of the third sub-pixel SP3, the first sub-pixelSP1, the second sub-pixel SP2 and the first sub-pixel SP1. In thisembodiment, the white sub-pixel columns WC, the first sub-pixel columnsPC1 and the second sub-pixel columns PC2 are repeatedly arranged in asequence of the first sub-pixel column PC1, the white sub-pixel columnWC, the second sub-pixel column PC2 and the white sub-pixel column WC inthe second direction D2. In the present invention, the first directionD1 and the second direction D2 are perpendicular to each other, but notlimited thereto. The first direction D1 may be a row direction, and thesecond direction D2 may be a column direction, but not limited thereto.Specifically, in the second direction D2, the 4n−3^(th) sub-pixelcolumns are the first sub-pixel columns PC1, the 4n−1^(th) sub-pixelcolumns are the second sub-pixel columns PC2, and the 4n−2^(th)sub-pixel columns and the 4n^(th) sub-pixel columns are the whitesub-pixel columns WC, where n is integers greater than 1.

In this embodiment, the first length L1 is substantially equal to thesecond length L2, the second length L2 is substantially equal to thethird length L3, the fourth length L4 is greater than the first lengthL1, and the fourth length L4 is substantially equal to a sum of twofirst lengths L1, the second length L2 and the third length L3. Inaddition, the first sub-pixel SP1 of the first sub-pixel column PC1entirely overlap the first sub-pixel SP1 of the second sub-pixel columnPC2 in the second direction D2, the second sub-pixel SP2 of the firstsub-pixel column PC1 entirely overlap the third sub-pixel SP3 of thesecond sub-pixel column PC2 in the second direction D2, and the whitesub-pixel SPW entirely overlap two of the first sub-pixels SP1, one ofthe second sub-pixels SP2 and one of the third sub-pixels SP3 in thesecond direction D2.

Refer to FIG. 6. FIG. 6 is a schematic diagram illustrating a pixelarrangement of color display panel according to an alternativeembodiment of the fifth embodiment of the present invention. As shown inFIG. 6, the relative position of the first sub-pixel SP1, the secondsub-pixel SP2, the third sub-pixel SP3 and the white sub-pixel SPW inthe pixel arrangement 5′ of color display panel in this alternativeembodiment is similar to that of the fifth embodiment. In thisalternative embodiment, the first direction D1 is a column direction,and the second direction D2 is a row direction.

Refer to FIG. 7. FIG. 7 is a schematic diagram illustrating a pixelarrangement of color display panel according to a sixth embodiment ofthe present invention. As shown in FIG. 7, in the pixel arrangement 6 ofcolor display panel of this embodiment, the white sub-pixel columns WC,the first sub-pixel columns PC1 and the second sub-pixel columns PC2 arerepeatedly arranged in a sequence of the first sub-pixel column PC1, thewhite sub-pixel column WC and the second sub-pixel column PC2 in thesecond direction D2. Specifically, in the second direction D2, the3n−2^(th) sub-pixel columns are the first sub-pixel columns PC1, the3n−1^(th) sub-pixel columns are the white sub-pixel columns WC, and the3n^(th) sub-pixel columns are the second sub-pixel columns PC2, where nis integers greater than 1. In addition, the fourth length L4 issubstantially equal to a sum of the first length L1 and the secondlength L2. Each of the white sub-pixels SPW entirely overlap one of thefirst sub-pixels SP1 and one of the second sub-pixels SP2 in the seconddirection D2, and each of the white sub-pixels SPW also entirely overlapone of the first sub-pixels SP1 and one of the third sub-pixels SP3 inthe second direction D2. For example, one side of the white sub-pixelSPW entirely overlap one of the first sub-pixels SP1 and one of thesecond sub-pixels SP2 of the first sub-pixel column PC1 in the seconddirection D2, and the other side of the white sub-pixel SPW entirelyoverlap one of the first sub-pixels SP1 and one of the third sub-pixelsSP3 of the second sub-pixel column PC 2 in the second direction D2. Thefirst direction D1 is a row direction, and the second direction D2 is acolumn direction, but not limited thereto.

Refer to FIG. 8. FIG. 8 is a schematic diagram illustrating a pixelarrangement of color display panel according to an alternativeembodiment of the sixth embodiment of the present invention. As shown inFIG. 8, the relative position of the first sub-pixel SP1, the secondsub-pixel SP2, the third sub-pixel SP3 and the white sub-pixel SPW inthe pixel arrangement 6′ of color display panel in this alternativeembodiment is similar to that of the sixth embodiment. In thisalternative embodiment, the first direction D1 is a column direction,and the second direction D2 is a row direction.

Refer to FIG. 9. FIG. 9 is a schematic diagram illustrating a pixelarrangement of color display panel according to a seventh embodiment ofthe present invention. As shown in FIG. 9, the pixel arrangement 7 ofcolor display panel of this embodiment includes a plurality of firstsub-pixels SP1, second sub-pixels SP2, third sub-pixels SP3 and fourthsub-pixels SP4 configured to provide a first color light, a second colorlight, a third color light and a fourth color light, respectively. Thefirst sub-pixel SP1 has a first length L1 in the first direction D1, thesecond sub-pixel SP2 has a second length L2 in the first direction D1,the third sub-pixel SP3 has a third length L3 in the first direction D1and the fourth sub-pixel SP4 has a fourth length L4 in the firstdirection D1. The first length L1 is substantially equal to the fourthlength L4, the second length L2 is substantially equal to the thirdlength L3, and the second length L2 is greater than the first length L1.In this embodiment, the first color light is preferably a green light,the second color light is preferably a red light, the third color lightis preferably a blue light and the fourth light is preferably a whitelight, i.e. the first sub-pixels SP1 are green sub-pixels, the secondsub-pixels SP2 are red sub-pixels, the third sub-pixels SP3 are bluesub-pixels, and the fourth sub-pixels SP4 are white sub-pixels, but notlimited thereto. In an alternative embodiment, the fourth color lightmay be another color light e.g. a yellow light, and the fourthsub-pixels SP4 may be yellow sub-pixels. In still another embodiment,the fourth color light may be a whitish light e.g. a yellowish whitelight or a blueish white light. The first sub-pixels SP1, the secondsub-pixels SP2, the third sub-pixels SP3 and the fourth sub-pixels SP4are arranged in the following manner. A portion of the first sub-pixelsSP1 and a portion of the fourth sub-pixels SP4 are arranged along thefirst direction D1 and form a plurality of first sub-pixel columns PC1,and the first sub-pixels SP1 and the fourth sub-pixels SP4 of the firstsub-pixel column PC1 are repeatedly arranged in a sequence of the firstsub-pixel SP1, the fourth sub-pixel SP4 and the first sub-pixel SP1 inthe first direction D1. The other portion of the first sub-pixels SP1and the other portion of the fourth sub-pixels SP4 are arranged alongthe first direction D1 and form a plurality of fourth sub-pixel columnsPC4, and the first sub-pixels SP1 and the fourth sub-pixels SP4 of thefourth sub-pixel column PC4 are repeatedly arranged in a sequence of thefirst sub-pixel SP1, the fourth sub-pixel SP4 and the first sub-pixelSP1 in the first direction D1. In addition, any one of the firstsub-pixels SP1 of the first sub-pixel column PC1 partially overlaps oneof the first sub-pixels SP1 and one of the fourth sub-pixels SP4 of thefourth sub-pixel column PC4 in the second direction D2 perpendicular tothe first direction D1. A portion of the second sub-pixels SP2 and aportion of the third sub-pixels SP3 are arranged along the firstdirection D1 and form a plurality of second sub-pixel columns PC2, andthe second sub-pixels SP2 and the third sub-pixels SP3 of the secondsub-pixel column PC2 are repeatedly arranged in a sequence of the secondsub-pixel SP2 and the third sub-pixel SP3 in the first direction D1. Theother portion of the second sub-pixels SP2 and the other portion of thethird sub-pixels SP3 are arranged along the first direction D1 and forma plurality of third sub-pixel columns PC3, and the second sub-pixelsSP2 and the third sub-pixels SP3 of the third sub-pixel column PC3 arerepeatedly arranged in a sequence of the third sub-pixel SP3 and thesecond sub-pixel SP2 in the first direction D1. In addition, the firstsub-pixel columns PC1, the second sub-pixel columns PC2, the thirdsub-pixel columns PC 3 and the fourth sub-pixel columns PC4 arerepeatedly arranged in a sequence of the second sub-pixel column PC2,the first sub-pixel column PC1, the third sub-pixel column PC3 and thefourth sub-pixel column PC 4 in the second direction D2. Specifically,in the second direction D2, the 4n−3^(th) sub-pixel columns are thesecond sub-pixel columns PC2, the 4n−2^(th) sub-pixel columns are thefirst sub-pixel columns PC1, the 4n−1^(th) sub-pixel columns are thethird sub-pixel column PC3 and the 4n^(th) sub-pixel columns are thefourth sub-pixel columns PC4, where n is integers greater than 1. In thefirst direction D1, the 3m−2^(th) sub-pixels and the 3m^(th) sub-pixelsof the first sub-pixel columns PC1 are the first sub-pixels SP1, and the3m−1^(th) sub-pixels of the first sub-pixel columns PC1 are the fourthsub-pixels SP4; the 2m−1^(th) sub-pixels of the second sub-pixel columnsPC2 are the second sub-pixels SP2, and the 2m^(th) sub-pixels of thesecond sub-pixel columns PC2 are the third sub-pixels SP3; the 2m−1^(th)sub-pixels of the third sub-pixel columns PC3 are the third sub-pixelsSP3, and the 2m^(th) sub-pixels of the third sub-pixel columns PC3 arethe second sub-pixels SP2; the 3m−2^(th) sub-pixels and the 3m^(th)sub-pixels of the fourth sub-pixel columns PC4 are the first sub-pixelsSP1, and the 3m−1^(th) sub-pixels of the fourth sub-pixel columns PC4are the fourth sub-pixels SP4, where m is integers greater than 1.

It is noted that the first sub-pixel column PC1 and the fourth sub-pixelcolumn PC4 are both composed of the first sub-pixels SP1 and the fourthsub-pixels SP4, and the first sub-pixels SP1 and the fourth sub-pixelsSP4 are arranged in the same sequence; however, the first sub-pixels SP1and the fourth sub-pixels SP4 of the fourth sub-pixel column PC4 isshifted in the first direction D1 with respect to the first sub-pixelsSP1 and the fourth sub-pixels SP4 of the first sub-pixel column PC1, andthe shifted length is less than the first length L1 or the fourth lengthL4. In other words, in the second direction D2, the first sub-pixel SP1of the first sub-pixel column PC1 partially overlaps the first sub-pixelSP1 and the fourth sub-pixel SP4 of the fourth sub-pixel column PC4, andthe fourth sub-pixel SP4 of the first sub-pixel column PC1 partiallyoverlaps the first sub-pixel SP1 and the fourth sub-pixel SP4 of thefourth sub-pixel column PC4.

In this embodiment, a sum of two second lengths L2 is substantiallyequal to a sum of three first lengths L1, each of the second sub-pixelSP2 of the second sub-pixel column PC2 entirely overlaps one of thethird sub-pixels SP3 of the third sub-pixel column PC3 in the seconddirection D2, each of the third sub-pixel SP3 of the second sub-pixelcolumn PC2 entirely overlaps one of the second sub-pixels SP2 of thethird sub-pixel column PC3 in the second direction D2. In addition, twoof the first sub-pixels SP1 and one of fourth sub-pixels SP4 of thefirst sub-pixel column PC1 entirely overlap one of the second sub-pixelsSP2 and one of the third sub-pixels SP3 of the second sub-pixel columnPC2 in the second direction D2, the first sub-pixel SP1 of the fourthsub-pixel column PC4 does not entirely overlap the first sub-pixel SP1and the fourth sub-pixel SP4 of the first sub-pixel column PC1, thesecond sub-pixel SP2 and the third sub-pixel SP3 of the second sub-pixelcolumn PC2 and the second sub-pixel SP2 and the third sub-pixel SP3 ofthe third sub-pixel column PC3 in the second direction D2.

In this embodiment, each of the first sub-pixels SP1, the secondsub-pixels SP2, the third sub-pixels SP3 and the fourth sub-pixels SP4is a rectangular sub-pixel, where the first length L1 is a distancebetween two opposite sides of the first sub-pixel SP1 in the firstdirection D1, the second length L2 is a distance between two oppositesides of the second sub-pixel SP2 in the first direction D1, the thirdlength L3 is a distance between two opposite sides of the thirdsub-pixel SP3 in the first direction D1, and the fourth length L4 is adistance between two opposite sides of the fourth sub-pixel SP4 in thefirst direction D1.

Refer to FIG. 10. FIG. 10 is a schematic diagram illustrating a pixelarrangement of color display panel according to an alternativeembodiment of the seventh embodiment of the present invention. As shownin FIG. 10, the relative position of the first sub-pixel SP1, the secondsub-pixel SP2, the third sub-pixel SP3 and the fourth sub-pixel SP4 inthe pixel arrangement 7′ of color display panel in this alternativeembodiment is similar to that of the seventh embodiment. In thisalternative embodiment, each of the first sub-pixels SP1 is a triangularsub-pixel (e.g. an isosceles triangular sub-pixel), and two firstsub-pixels SP1 adjacent in the first direction D1 form a rhombus. Eachof the second sub-pixels SP2, the third sub-pixels SP3 and the fourthsub-pixels SP4 is a rhombus sub-pixel. The first length L1 is a distancebetween a vertex and an opposite side of the first sub-pixel SP1 in thefirst direction D1, the second length L2 is a distance between twoopposite vertices of the second sub-pixel SP2 in the first direction D1,the third length L3 is a distance between two opposite vertices of thethird sub-pixel SP3 in the first direction D1, and the fourth length L4is a distance between two opposite vertices of the fourth sub-pixel SP4in the first direction D1.

The pixel arrangement of color display panel of the present invention isable to support pixel rendering and/or white sharing display. Pixelrendering (also referred to as sub-pixel rendering, SPR) is a mechanismin which a plurality of adjacent pixel units can share the same secondsub-pixel and/or the same third sub-pixel; white sharing is a mechanismin which a plurality of adjacent pixel units can share the same whitesub-pixel. Accordingly, the pixel arrangement of color display panel ofthe present invention includes four types of sub-pixels for providingdifferent color lights including the first sub-pixels, the secondsub-pixels, the third sub-pixels and the white sub-pixels, but theresolution is not reduced.

Refer to FIG. 11. FIG. 11 is a schematic diagram illustrating nineadjacent pixel units of the pixel arrangement of color display panel ofthe present invention. As shown in FIG. 11, the pixel arrangement ofcolor display panel of the present invention includes nine adjacentpixel units P1-P9 arranged as a 3*3 array. When displaying, the colordisplay panel will receive an original image data, which includes ninegroups of image data, and each group of data includes a green lightgrayscale value, a red light grayscale value, a blue light grayscalevalue and a white light grayscale value.

The number and shape of the sub-pixels of the pixel units P1-P9 may bedifferent in the pixel arrangement of color display panel of differentembodiments. In the following description, two adjacent pixel units ofthe pixel arrangement of color display panel of the first embodiment isselected as an example to illustrate pixel rendering and white sharing.As shown in FIG. 1 and FIG. 11, the pixel arrangement 1 of color displaypanel includes a plurality of pixel units, where each of the pixel unitsP1-P9 is composed of one second sub-pixel SP2 and/or one third sub-pixelSP3 disposed adjacent to each other of the second sub-pixel column PC2(or one second sub-pixels SP2 and/or one third sub-pixel SP3 disposedadjacent to each other of the third sub-pixel column PC3), one firstsub-pixel SP1 of the first sub-pixel column PC1 and one white sub-pixelSPW of the white sub-pixel column WC.

The pixel unit P5 and the pixel unit P6 are two adjacent pixel units inthe second direction D2. The pixel unit P5 and the pixel unit P6 sharethe same second sub-pixel SP2 and the same third sub-pixel SP3, and thusthe common second sub-pixel SP2 and/or the common third sub-pixel SP3may perform pixel rendering. When the pixel unit P5 is composed of thethird sub-pixel SP3 of the second sub-pixel column PC2, the firstsub-pixel SP1 of the first sub-pixel column PC1 and the white sub-pixelSPW of the white sub-pixel column WC, and when the pixel unit P6 iscomposed of the second sub-pixel SP2 of the second sub-pixel PC2, thefirst sub-pixel SP1 of the first sub-pixel column PC1 and the whitesub-pixel SPW of the white sub-pixel column WC, the actually-displayedred light grayscale value of the second sub-pixel SP2 of the pixel unitP6 is determined by both the red light grayscale value of the pixel unitP5 and the red light grayscale value of the pixel unit P6. For example,the actually-displayed red light grayscale value of the second sub-pixelSP2 of the pixel unit P6 may be the mean value or the minimum value ofthe red light grayscale value of the pixel unit P5 and the red lightgrayscale value of the pixel unit P6, or any value calculated bydifferent algorithms that can significantly reflect the red lightgrayscale value of the pixel unit P5 and the red light grayscale valueof the pixel unit P6. Similarly, when the pixel unit P5 is composed ofthe second sub-pixel SP2 of the second sub-pixel column PC2, the firstsub-pixel SP1 of the first sub-pixel column PC1 and the white sub-pixelSPW of the white sub-pixel column WC, and when the pixel unit P6 iscomposed of the third sub-pixel SP3 of the second sub-pixel PC2, thefirst sub-pixel SP1 of the first sub-pixel column PC1 and the whitesub-pixel SPW of the white sub-pixel column WC, the actually-displayedblue light grayscale value of the third sub-pixel SP3 of the pixel unitP6 is determined by both the blue light grayscale value of the pixelunit P5 and the blue light grayscale value of the pixel unit P6. Forexample, the actually-displayed blue light grayscale value of the thirdsub-pixel SP3 of the pixel unit P6 may be the mean value or the minimumvalue of the blue light grayscale value of the pixel unit P5 and theblue light grayscale value of the pixel unit P6, or any value calculatedby different algorithms that can significantly reflect the blue lightgrayscale value of the pixel unit P5 and the blue light grayscale valueof the pixel unit P6.

In addition, the pixel unit P5 and the pixel unit P8 are two adjacentpixel units in the first direction D1. If the white light grayscalevalue of the pixel unit P5 is not zero and the white light grayscalevalue of the pixel unit P8 is not zero, white sharing can be performed.Meanwhile, the actually-displayed white light grayscale value of thewhite sub-pixel SPW shared by the pixel unit P5 and the pixel unit P8may be the mean value or the minimum value of the white light grayscalevalue of the pixel unit P5 and the white light grayscale value of thepixel unit P8, or any value calculated by different algorithms that cansignificantly reflect the white light grayscale value of the pixel unitP5 and the white light grayscale value of the pixel unit P8. If one ofthe white light grayscale value of the pixel unit P5 and the white lightgrayscale value of the pixel unit P8 is zero, white sharing is notperformed. For example, if the white light grayscale value of the pixelunit P5 is zero and the white light grayscale value of the pixel unit P8is not zero, the actually-displayed white light grayscale value of thewhite sub-pixel SPW shared by the pixel unit P5 and the pixel unit P8 iszero, i.e. both the pixel unit P5 and the pixel unit P8 provide redlight, green light and blue light without white light. In such a case,pixel rendering can still be performed on the second sub-pixel SP2and/or the third sub-pixel SP3. Similarly, if the white light grayscalevalue of the pixel unit P5 is not zero and the white light grayscalevalue of the pixel unit P8 is zero, the actually-displayed white lightgrayscale value of the white sub-pixel SPW shared by the pixel unit P5and the pixel unit P8 is zero, i.e. both the pixel unit P5 and the pixelunit P8 provide red light, green light and blue light without whitelight. In such a case, pixel rendering can still be performed on thesecond sub-pixel SP2 and/or the third sub-pixel SP3.

In the following description, two adjacent pixel units of the pixelarrangement 6′ of color display panel of the sixth embodiment areselected as another example to illustrate pixel rendering and whitesharing. As shown in FIG. 8 and FIG. 11, the pixel arrangement 6′ ofcolor display panel includes a plurality of pixel units, where each ofthe pixel units P1-P9 is composed of one first sub-pixel SP1, one secondsub-pixel SP2 and/or one third sub-pixel SP3 disposed adjacent to eachother of the first sub-pixel column PC1 (or one first sub-pixel SP1, onesecond sub-pixel SP2 and/or one third sub-pixel SP3 disposed adjacent toeach other of the second sub-pixel column PC2), and one white sub-pixelSPW of the white sub-pixel column WC.

The pixel unit P5 and the pixel unit P8 are two adjacent pixel units inthe first direction D1. The pixel unit P5 and the pixel unit P8 sharethe same second sub-pixel SP2 and the same third sub-pixel SP3, and thusthe common second sub-pixel SP2 and/or the common third sub-pixel SP3may perform pixel rendering. When the pixel unit P5 is composed of thethird sub-pixel SP3 and the first sub-pixel SP1 of the first sub-pixelcolumn PC1 and the white sub-pixel SPW of the white sub-pixel column WC,and when the pixel unit P8 is composed of the second sub-pixel SP2 andthe first sub-pixel SP1 of the first sub-pixel column PC1 and the whitesub-pixel SPW of the white sub-pixel column WC, the actually-displayedred light grayscale value of the second sub-pixel SP2 of the pixel unitP8 is determined by both the red light grayscale value of the pixel unitP5 and the red light grayscale value of the pixel unit P8. For example,the actually-displayed red light grayscale value of the second sub-pixelSP2 of the pixel unit P8 may be the mean value or the minimum value ofthe red light grayscale value of the pixel unit P5 and the red lightgrayscale value of the pixel unit P8, or any value calculated bydifferent algorithms that can significantly reflect the red lightgrayscale value of the pixel unit P5 and the red light grayscale valueof the pixel unit P8. Similarly, when the pixel unit P5 is composed ofthe second sub-pixel SP2 and the first sub-pixel SP1 of the firstsub-pixel column PC1 and the white sub-pixel SPW of the white sub-pixelcolumn WC, and when the pixel unit P8 is composed of the third sub-pixelSP3 and the first sub-pixel SP1 of the first sub-pixel column PC1 andthe white sub-pixel SPW of the white sub-pixel column WC, theactually-displayed blue light grayscale value of the third sub-pixel SP3of the pixel unit P8 is determined by both the blue light grayscalevalue of the pixel unit P5 and the blue light grayscale value of thepixel unit P8. For example, the actually-displayed blue light grayscalevalue of the third sub-pixel SP3 of the pixel unit P8 may be the meanvalue or the minimum value of the blue light grayscale value of thepixel unit P5 and the blue light grayscale value of the pixel unit P8,or any value calculated by different algorithms that can significantlyreflect the blue light grayscale value of the pixel unit P5 and the bluelight grayscale value of the pixel unit P8.

In addition, the pixel unit P5 and the pixel unit P6 are two adjacentpixel units in the second direction D2. If the white light grayscalevalue of the pixel unit P5 is not zero and the white light grayscalevalue of the pixel unit P6 is not zero, white sharing can be performed.Meanwhile, the actually-displayed white light grayscale value of thewhite sub-pixel SPW shared by the pixel unit P5 and the pixel unit P6may be the mean value or the minimum value of the white light grayscalevalue of the pixel unit P5 and the white light grayscale value of thepixel unit P6, or any value calculated by different algorithms that cansignificantly reflect the white light grayscale value of the pixel unitP5 and the white light grayscale value of the pixel unit P6. If one ofthe white light grayscale value of the pixel unit P5 and the white lightgrayscale value of the pixel unit P6 is zero, white sharing is notperformed. For example, if the white light grayscale value of the pixelunit P5 is zero and the white light grayscale value of the pixel unit P6is not zero, the actually-displayed white light grayscale value of thewhite sub-pixel SPW shared by the pixel unit P5 and the pixel unit P6 iszero, i.e. both the pixel unit P5 and the pixel unit P6 provide redlight, green light and blue light without white light. In such a case,pixel rendering can still be performed on the second sub-pixel SP2and/or the third sub-pixel SP3. Similarly, if the white light grayscalevalue of the pixel unit P5 is not zero and the white light grayscalevalue of the pixel unit P6 is zero, the actually-displayed white lightgrayscale value of the white sub-pixel SPW shared by the pixel unit P5and the pixel unit P6 is zero, i.e. both the pixel unit P5 and the pixelunit P6 provide red light, green light and blue light without whitelight. In such a case, pixel rendering can still be performed on thesecond sub-pixel SP2 and/or the third sub-pixel SP3

In the aforementioned embodiments, pixel rendering and white sharingmechanisms are illustrated in two adjacent pixel unit P5 and pixel unitP6 or pixel unit P5 and pixel unit P8. In the pixel arrangement of colordisplay panel of all the embodiments, pixel rendering and/or whitesharing can be performed on any one pixel unit and at least another onepixel unit adjacently disposed. Also, the definition (composition) ofthe pixel unit may be modified based on different algorithms indifferent embodiments.

The pixel arrangement of color display panel of the present inventioncan be applied to various types of color display panel. The colordisplay panel may be a non-self-luminous display panel or self-luminousdisplay panel, where the non-self-luminous display panel may include aliquid crystal display panel, an electrophoretic display panel, anelectrowetting display panel and other suitable non-self-luminousdisplay panels; the self-luminous display panel may include an organiclight-emitting diode (OLED) display panel, a plasma display panel, afield emission display panel or other self-luminous display panels.

In conclusion, the pixel arrangement of color display panel of thepresent invention includes green sub-pixels, red sub-pixels, bluesub-pixels and white sub-pixels, and adjacent pixel units shares atleast one sub-pixel. Consequently, the brightness can be increasedthrough white sub-pixels without sacrificing resolution. In addition,the pixel arrangement of color display panel of the present invention isable to support pixel rendering and/or white sharing mechanisms.

Those skilled in the art will readily observe that numerousmodifications and alterations of the device and method may be made whileretaining the teachings of the invention. Accordingly, the abovedisclosure should be construed as limited only by the metes and boundsof the appended claims.

What is claimed is:
 1. A pixel arrangement of color display panel,comprising: a plurality of white sub-pixels, configured to provide awhite light, wherein the white sub-pixels extend along a first directionand form a plurality of white sub-pixel columns, and the white sub-pixelhas a fourth length in the first direction; a plurality of firstsub-pixels, disposed between the white sub-pixel columns and configuredto provide a first color light, wherein the first sub-pixel has a firstlength in the first direction; a plurality of second sub-pixels,disposed between the white sub-pixel columns and configured to provide asecond color light, wherein the second sub-pixel has a second length inthe first direction; and a plurality of third sub-pixels, disposedbetween the white sub-pixel columns and configured to provide a thirdcolor light, wherein the third sub-pixel has a third length in the firstdirection, a portion of the first sub-pixels, the second sub-pixels andthe third sub-pixels are arranged along the first direction and form aplurality of first sub-pixel columns arranged substantially in parallel,the first sub-pixels, the second sub-pixels and the third sub-pixels ofthe first sub-pixel column are repeatedly arranged in a sequence of thesecond sub-pixel, the first sub-pixel, the third sub-pixel and the firstsub-pixel, the other portion of the first sub-pixels, the secondsub-pixels and the third sub-pixels are arranged along the firstdirection and form a plurality of second sub-pixel columns arrangedsubstantially in parallel, and the first sub-pixels, the secondsub-pixels and the third sub-pixels of the second sub-pixel column arerepeatedly arranged in a sequence of the third sub-pixel, the firstsub-pixel, the second sub-pixel and the first sub-pixel, and wherein thefirst length is substantially equal to the second length, the secondlength is substantially equal to the third length, the fourth length isgreater than the first length, and the first sub-pixel of the firstsub-pixel column entirely overlap the first sub-pixel of the secondsub-pixel column in a second direction perpendicular to the firstdirection.
 2. The pixel arrangement of color display panel of claim 1,wherein the first color light is a green light, the second color lightis a red light and the third color light is a blue light.
 3. The pixelarrangement of color display panel of claim 1, wherein the whitesub-pixel columns, the first sub-pixel columns and the second sub-pixelcolumns are repeatedly arranged in a sequence of the first sub-pixelcolumn, the white sub-pixel column, the second sub-pixel column and thewhite sub-pixel column in the second direction.
 4. The pixel arrangementof color display panel of claim 3, wherein the fourth length issubstantially equal to a sum of two first lengths, the second length andthe third length, and each of the white sub-pixels entirely overlap twoof the first sub-pixels, one of the second sub-pixels and one of thethird sub-pixels in the second direction.
 5. The pixel arrangement ofcolor display panel of claim 1, wherein the white sub-pixel columns, thefirst sub-pixel columns and the second sub-pixel columns are repeatedlyarranged in a sequence of the first sub-pixel column, the whitesub-pixel column and the second sub-pixel column in the seconddirection.
 6. The pixel arrangement of color display panel of claim 5,wherein the fourth length is substantially equal to a sum of the firstlength and the second length, each of the white sub-pixels entirelyoverlap one of the first sub-pixels and one of the second sub-pixels inthe second direction, and each of the white sub-pixels entirely overlapone of the first sub-pixels and one of the third sub-pixels in thesecond direction.